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Finding the Fourth Proportional to 152,469.78, 210,412.91 and 84,480.39

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Solution

The fourth proportional to 152,469.78, 210,412.91 and 84,480.39 is: 116,585.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,469.78 : 210,412.91 = 84,480.39 : x
  2. Step 2: Convert to fraction form
    152,469.78/210,412.91 = 84,480.39/x
  3. Step 3: Cross multiply
    152,469.78x = 210,412.91 × 84,480.39
  4. Step 4: Simplify right side
    152,469.78x = 17,775,764,275.43
  5. Step 5: Solve for x
    x = 17,775,764,275.43/152,469.78
  6. Step 6: Final answer
    x = 116,585.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.